package com.xueyi.aixihu.utils;

import org.springframework.util.StringUtils;

import javax.servlet.http.HttpServletRequest;

/**
 * 描述 IP工具类
 *
 * @auther 俞烨
 * @date 2022-08-16 11
 */
public class IpUtil {

    /**
     * 获取登陆的ip地址（非局域网）
     *
     * @param request
     * @return
     */
    public static String getIpAddress(HttpServletRequest request) {
        String ip = request.getHeader("X-Forwarded-For");
        if (!StringUtils.isEmpty(ip) && !"unKnown".equalsIgnoreCase(ip)) {
            //多次反向代理后会有多个ip值，第一个ip才是真实ip
            int index = ip.indexOf(",");
            if (index != -1) {
                return ip.substring(0, index);
            } else {
                return ip;
            }
        }
        ip = request.getHeader("X-Real-IP");
        if (!StringUtils.isEmpty(ip) && !"unKnown".equalsIgnoreCase(ip)) {
            return ip;
        }
        return request.getRemoteAddr();

    }
}
